[mnordell] 29656: Feeble attempt at getting NT4 vga.sys working by implementing HalFrameBufferCachingInformation case for HaliQuerySystemInformation.

Author: mnordell
Date: Thu Oct 18 12:00:59 2007
New Revision: 29656
URL: http://svn.reactos.org/svn/reactos?rev=29656&view=rev
Log:
Feeble attempt at getting NT4 vga.sys working by implementing
HalFrameBufferCachingInformation case for HaliQuerySystemInformation.
Modified:
    trunk/reactos/hal/halx86/generic/sysinfo.c
Modified: trunk/reactos/hal/halx86/generic/sysinfo.c
URL:
http://svn.reactos.org/svn/reactos/trunk/reactos/hal/halx86/generic/sysinfo…
==============================================================================
--- trunk/reactos/hal/halx86/generic/sysinfo.c (original)
+++ trunk/reactos/hal/halx86/generic/sysinfo.c Thu Oct 18 12:00:59 2007
@@ -23,13 +23,54 @@
 NTSTATUS
 NTAPI
-HaliQuerySystemInformation(IN HAL_QUERY_INFORMATION_CLASS InformationClass,
-                           IN ULONG BufferSize,
-                           IN OUT PVOID Buffer,
-                           OUT PULONG ReturnedLength)
+HaliQuerySystemInformation(IN     HAL_QUERY_INFORMATION_CLASS InformationClass,
+                           IN     ULONG  BufferSize,
+                           IN OUT PVOID  Buffer,
+                              OUT PULONG ReturnedLength)
 {
-    UNIMPLEMENTED;
-    return STATUS_NOT_IMPLEMENTED;
+#define REPORT_THIS_CASE(X) case X: DPRINT1("Unhandled case: %s\n", #X); break
+       switch (InformationClass)
+       {
+               REPORT_THIS_CASE(HalInstalledBusInformation);
+               REPORT_THIS_CASE(HalProfileSourceInformation);
+               REPORT_THIS_CASE(HalInformationClassUnused1);
+               REPORT_THIS_CASE(HalPowerInformation);
+               REPORT_THIS_CASE(HalProcessorSpeedInformation);
+               REPORT_THIS_CASE(HalCallbackInformation);
+               REPORT_THIS_CASE(HalMapRegisterInformation);
+               REPORT_THIS_CASE(HalMcaLogInformation);
+               case HalFrameBufferCachingInformation:
+               if (BufferSize >= 1)
+               {
+                       // The only caller that has been seen calling this function told
+                       // us it expected a single byte back. We therefore guess it
expects
+                       // a BOOLEAN, and we dream up the value TRUE to (we think) tell it
+                       // "Sure, the framebuffer is cached".
+                       DPRINT("%s: caller expects %u bytes (should be 1)\n",
"HalFrameBufferCachingInformation", BufferSize);
+                       BOOLEAN ToReturn = TRUE;
+                       ASSERT(sizeof(BOOLEAN) == 1);
+                       *ReturnedLength = sizeof(BOOLEAN);
+                       RtlCopyMemory(Buffer, &ToReturn, sizeof(BOOLEAN));
+                       return STATUS_SUCCESS;
+               }
+               break;
+               REPORT_THIS_CASE(HalDisplayBiosInformation);
+               REPORT_THIS_CASE(HalProcessorFeatureInformation);
+               REPORT_THIS_CASE(HalNumaTopologyInterface);
+               REPORT_THIS_CASE(HalErrorInformation);
+               REPORT_THIS_CASE(HalCmcLogInformation);
+               REPORT_THIS_CASE(HalCpeLogInformation);
+               REPORT_THIS_CASE(HalQueryMcaInterface);
+               REPORT_THIS_CASE(HalQueryAMLIIllegalIOPortAddresses);
+               REPORT_THIS_CASE(HalQueryMaxHotPlugMemoryAddress);
+               REPORT_THIS_CASE(HalPartitionIpiInterface);
+               REPORT_THIS_CASE(HalPlatformInformation);
+               REPORT_THIS_CASE(HalQueryProfileSourceList);
+       }
+#undef REPORT_THIS_CASE
+
+       UNIMPLEMENTED;
+       return STATUS_NOT_IMPLEMENTED;
 }
 NTSTATUS